msm: camera: cpas: Add support for custom QoS selection

Add cpas interface to allow clients or usecase to select
different QoS settings based on requirement. Selection
API must be called before camera hw powers up.

CRs-Fixed: 2687917
Change-Id: Ie524fcd6131d7c42288d0d734a7cdf6b9fcb92b7
Signed-off-by: Pavan Kumar Chilamkurthi <pchilamk@codeaurora.org>